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    MasterProtect HB 400

    Breathable, high-build, 100% acrylic, waterproof coating for above grade applications

    Form​​erly: Thorocoat

    How does Mas​​terProtect HB 400 work?

    MasterProtect HB 400 is a water-based, high-build, 100% acrylic, waterproof coating for above-grade concrete, masonry, stucco, and EIFS.

    Recommended uses:

    • Exterior
    • Vertical and overhead surfaces
    • Above grade
    • Protecting and waterproofing

    What are the unique features of MasterProtect ​​HB 400?

    • Available in a broad range of colors and textures for design versatility
    • Resists wind-driven rain; helps prevent water penetration into the substrate
    • Breathable to allow water vapor to escape
    • Excellent adhesion, bonds securely to substrate for long-term durability
    • Excellent hiding power
    • Low VOC content for broad compliance across all regions

    What are the benefits of MasterProtect HB 400?​​

    • UV resistance provides excellent color retention for a long-lasting, attractive finish
    • Textured formulations help improve aesthetics of irregular substrates
    • Effective carbon dioxide diffusion barrier, protects embedded steel from corrosion
    • Freeze/thaw resistant suitable for cold climates​

    Direct contact

    Master Builders Solutions Technical Support

    Construction Systems


    Safety Data Sheet (SDS)

    Find all available safety data sheets for this product.

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